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Gamma vs Slidely AI

Two fact sheets from our own research, side by side — pricing, platforms, API access and status re-checked by us rather than quoted from the vendors.

The short answer

Cheaper paid plan
Gamma — $9/mo vs $20/mo for Slidely AI
Free plan
Both have one
Public API
Both have one
Higher Trust score
Gamma — 90 vs 83 for Slidely AI
Best fit
Gamma: Anyone who needs a presentable deck out of rough notes in minutes · Slidely AI: Teams that need decks to stay editable inside PowerPoint, not just exported once

From our own records as of each tool's last check. Anything we have not confirmed is left out rather than guessed. How we verify

GammaPrompts become decks, docs and sites you can publishSlidely AIY Combinator-backed tool that turns prompts, data, or sketches into editable PowerPoint decks.

Side by side

FactGammaSlidely AI
CategoryPresentation & Slide GeneratorsPresentation & Slide Generators
Pricing modelFreemiumFreemium
Starts at$9/mo$20/mo
Public APIYesYes
Trust score90 / 10083 / 100
PlatformsWeb, APIWeb, Windows, macOS, API
CompanyGamma Tech, Inc.Tersho Inc.
Launched2020—
Last verifiedOct 23, 2026Oct 15, 2026

What our research says

Gamma

The tool that genuinely displaced PowerPoint for a lot of people, and it is profitable enough not to need your money - but credits, not seats, decide how much a plan is actually worth.

Pros

  • Layout and image choice happen without picking a template first
  • One document publishes as a deck, a doc or a live web page
  • Plus at $9 per seat per month already removes the Gamma badge
  • Profitable at over $100M ARR, so the vendor is not a runway risk

Cons

  • Credit accounting is opaque - a premium image can cost up to 125 credits
  • API keys are locked to Pro and above
  • The free plan's 400 signup credits do not go far on image-rich decks
  • Export fidelity to PowerPoint degrades on complex layouts

Slidely AI

Slidely's PowerPoint add-in and Excel-linked charts make it more useful for people who live inside Microsoft Office than a browser-only deck tool would be. The free plan is deliberately limited, with add-in access cutting off after 15 days, so it functions mainly as a trial rather than a lasting free tier. Enterprise-oriented compliance claims, including SOC 2 and GDPR, suggest it is aimed at business buyers as much as individuals.

Pros

  • PowerPoint add-in works natively inside Windows and Mac Office, not just the browser
  • Excel-linked charts and tables update automatically instead of needing re-export
  • Y Combinator backing and named compliance certifications add some outside verification

Cons

  • Free plan's PowerPoint add-in access expires after 15 days
  • Entry paid tier still requires a per-seat jump to Team pricing for collaboration

Which one fits

Choose Gamma if you need

  • Anyone who needs a presentable deck out of rough notes in minutes
  • Teams publishing one-page sites and documents without a website tool
  • Users who want AI layout but expect to keep editing afterwards

Choose Slidely AI if you need

  • Teams that need decks to stay editable inside PowerPoint, not just exported once
  • Users who want charts and tables linked live to an Excel file
  • Companies that need SOC 2 or GDPR compliance documentation

Gamma vs Slidely AI: the questions people ask

Is Gamma cheaper than Slidely AI?

On published entry prices, Gamma starts lower — $9/mo against $20/mo for Slidely AI. Entry price is the lowest paid plan as we last verified it; what each plan includes differs.

Does Gamma or Slidely AI have a free tier?

Both: Gamma has a free tier, and Slidely AI has a free tier.

Which has a public API, Gamma or Slidely AI?

Both ship a public API, so either can be built on; the fact table above shows the platforms each one runs on.

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